Upgrading to 0.4.2

Descend · Post by **Descend** » Wed Jan 07, 2004 6:31 pm

I have just upgraded the version of Irrlicht I'm using to 0.4.2 and after some minor changes to my code, everything seems to compile. However I am now getting an unresolved external:

"MM error LNK2019: unresolved external symbol "__declspec(dllimport) class irr::IrrlichtDevice * __cdecl irr::createDevice(enum irr::video::EDriverType,class irr::core::dimension2d<int> const &,unsigned int,bool,bool,class irr::IEventReceiver *,wchar_t const *)" (__imp_?createDevice@irr@@YAPAVIrrlichtDevice@1@W4EDriverType@video@1@ABV?$dimension2d@H@core@1@I_N2PAVIEventReceiver@1@PB_W@Z) referenced in function "public: void __thiscall CClient::Run(void)" (?Run@CClient@@QAEXXZ)"

Any ideas??

Homer · Post by **Homer** » Wed Jan 07, 2004 6:45 pm

can you please post your code for creating the device?

Descend · Post by **Descend** » Wed Jan 07, 2004 10:49 pm

Simply done with this line:

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, receiver);

I have also tried changing the line to:

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, receiver, IRRLICHT_SDK_VERSION);

WIDTH and HEIGHT are defined elsewhere but are currently 800 and 600 respectively.

keless · Post by **keless** » Wed Jan 07, 2004 10:50 pm

sounds like you're linking in the old 0.4.1 or 0.4.0 .lib file-- make sure you're linking in the new 0.4.2 file

DarkWhoppy · Post by **DarkWhoppy** » Wed Jan 07, 2004 11:25 pm

Descend wrote:Simply done with this line:

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, receiver);

I have also tried changing the line to:

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, receiver, IRRLICHT_SDK_VERSION);

WIDTH and HEIGHT are defined elsewhere but are currently 800 and 600 respectively.

Notice your device setup there...

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, receiver, IRRLICHT_SDK_VERSION);

Now try this one...

IrrlichtDevice *device = createDevice(EDT_OPENGL, dimension2d<s32>(WIDTH, HEIGHT), 32, false, false, &receiver, IRRLICHT_SDK_VERSION);

The event reciever should be a pointer address of the reciever.

Descend · Post by **Descend** » Thu Jan 08, 2004 6:41 pm

No, made sure that I'm linking in with the latest library, and the receiver I'm using is already a pointer...

Any other ideas?

Guest · Post by **Guest** » Thu Jan 08, 2004 8:29 pm

Ok, I've been hacking around with this for hours now. It works perfectly if I compile it using the previous version 0.4.0 ... there must be something really simple I'm missing!

Its starting to do my head in...

Homer · Post by **Homer** » Thu Jan 08, 2004 8:32 pm

hmm, have you copied the new version of the irrlicht dll to your win\system directory?

keless · Post by **keless** » Thu Jan 08, 2004 8:38 pm

Guys, this is a "MM error LNK2019"--- a Link Error.
its not caused by the wrong .dll, or by a typo. its caused by not finding the offending function inside the .lib file.

there are only a number of things that could cause this:

1) its a 0.4 function which is not found in 0.4.2 .lib you say you are using
2) you're not actually using the 0.4.2 .lib (though you're probably using the 0.4.2 headers)
3) you're 'using' the 0.4.2 .lib, but you havent set up your project to properly include it-- since it cant find the .lib, you have a link error (but somewhere in the compile output it should say 'couldnt find included xxx.lib')
4) you have redefined the function header for some silly reason (not likely)

my money is on 3

qwe · Post by **qwe** » Thu Jan 08, 2004 8:51 pm

keless, your Tetris game gives me the same link error. I have absolutely no idea what's going on, since all of my projects compile/run fine.

Descend · Post by **Descend** » Thu Jan 08, 2004 8:57 pm

I was thinking 3 too, but there are no missing library errors, it just simply cannot seem to find the function inside the library.

The only thing I've got to go on here is that it is looking for the function:
?createDevice@irr@@YAPAVIrrlichtDevice@1@W4EDriverType@video@1@ABV?$dimension2d@H@core@1@I_N2PAVIEventReceiver@1@PB_W@Z

But in the actual DLL (Opened using PE Viewer) the function is
?createDevice@irr@@YAPAVIrrlichtDevice@1@W4EDriverType@video@1@ABV?$dimension2d@H@core@1@I_N2PAVIEventReceiver@1@PBG@Z

Notice the only difference is PB_W and PBG ... I have no idea what that means though if it means anything at all!

Boogle · Post by **Boogle** » Thu Jan 08, 2004 9:18 pm

I'm sure you've checked this while checking the other lib suggestions, but are you linking to the correct lib for your development platform?

keless · Post by **keless** » Thu Jan 08, 2004 9:31 pm

yeah, are you using MSVC or DevCpp

keless, your Tetris game gives me the same link error. I have absolutely no idea what's going on, since all of my projects compile/run fine.

interesting-- I used both MSVC and DevCpp to build it, perhaps I left a .dll or .lib file belonging to the opposite IDE that you're using? I have not modified the engine in anyway, so you shouldnt have a problem if you havent either. (0.4.2)

I suppose ICE gives you the same error?
http://www.skyesurfer.net/keless/IrrLicht/ICE/

qwe · Post by **qwe** » Fri Jan 09, 2004 3:21 am

i'm using msvc.

no, i haven't tried that one. I will as soon as I can though.

keless · Post by **keless** » Fri Jan 09, 2004 6:45 am

Ah, i found an easy (if hack-ish) solution:
In your SolutionExplorer, choose 'add existing item' and browse till you find the MSVC IrrLicht.lib file. select it (it is now included in your project tree).

Build, and wala!

With my Tetris and ICE src distributions, I have a folder called /dlls/MSVC/ which has both the .DLL and the .LIB -- (apparently this was the reason I included the .LIB)